Stove or oven door



(No Model.)

ITO- 258,208.

j DQK. ALDEN.

STOVE 0R OVEN DOOR.

Patented May23,"1882.

@ WD tnQ saga.

/ Inn/e ni'or'.

Dan/a Kuflm N, Pnens. Photo-Ulhcgnpher. waning n. c

UNITED STATES PATENT OFFICE.

DANA K. ALDEN, OF STERLING, MASSACHUSETTS.

STOVE oR OVEN DOOR.

SPECIFIGATION forming part of Letters Patent No. 258,208, dated May 23,1882. Application filed January 3, 1882. (No model.)

To all whom it may concern:

Beitknown that I, DANA K. ALDEN, of Sterling, in the county of Worcesterand State of Massachusetts, have invented a new and useful Improvementin Stove or Oven Doors; and I do hereby declare the same to be describedin the following specification and represented in the accompanyingdrawings, of which- Figure 1 is a front elevation, and Fig. 2 atransverse section, of an oven or stove door having my improvement,which relates to such a door when having fixed in it a plate or panel ofglass.

The great difficulty experienced in the use of such doors is thecracking of the glass when subjected to the heat of the stove, or oven.

In carrying out my invention the pane or panel of glass is to havearound hole or holes made through it' at its center, or thereabout. Ihave found in practice that when the plate has such a hole in it thereislittle,if any, danger of the platebecoming cracked by the heat. Uponsuch a plate heated to a high degree I have thrown cold water without itbecoming cracked by sudden reduction of temperature. A like rise to ahigh degree of heat will not cause the plate to be cracked. Inconnection with the hole Iuse a covering-plate held in place by ascrew-bolt and nut, the bolt having to its shank a diameter less thanthat of the hole, and going through the said coveringplate and hole, andscrew into the nut, which should extend across or cover the hole, theobject being to prevent air from going through the hole. In some cases,however, I so apply the covering-plate and screwand nut as to enable theplate to be turned aside, so as to undoor, of a plate or panel of glassfixed therein and provided with a hole extending through it, (the saidplate,') as and for the purpose as set forth.

2. The combinationof an oven or stove door with a plate or panel ofglass, perforated as described, and fixed therein, and with a coveringplate and screw-bolt and nut, arranged, substantially as set forth, withthe perforation or hole of the said glass panel or plate, all beingessentially and for the purpose as specified.

DANA K. ALDEN.

Witnesses:

R. H. EDDY, S. N. PIPER.

